Set of 6 bits helical of 5 to 10 mm in alloy of steel to the tungsten for hammer electric to rod round, suitable for the maconnerie, to the concrete, to the stone and to the roche

The finish perfectly torsadee allows also a drilling smooth and clear when of your projects.

Material: Carbon steel

Tip in carbide for more than resistance and of durability

Perfect for drill the concrete, the maconnerie, the blocks lightweight and the stone

Improves the efficiency and the convenience of the work. The bits must be maintenus vertically when of their use.